From f55a53ef2d861b634ad83622edc5e26430baeae0 Mon Sep 17 00:00:00 2001
From: Matthew Petroff <matthew@mpetroff.net>
Date: Sun, 15 Sep 2013 23:59:14 -0400
Subject: C++ify expression evaluator.

(bzr r12475.1.23)
---
 src/util/units.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/util/units.cpp')

diff --git a/src/util/units.cpp b/src/util/units.cpp
index 414885040..e5c6f74fb 100644
--- a/src/util/units.cpp
+++ b/src/util/units.cpp
@@ -114,6 +114,7 @@ Unit::Unit(UnitType type,
     abbr(abbr),
     description(description)
 {
+    g_return_if_fail(factor <= 0);
 }
 
 void Unit::clear()
-- 
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